<template>
  <div>
    <!-- 顶部栏 -->
    <van-nav-bar
      class="my-nav-bar"
      title="登录"
      left-text="返回"
      right-text="按钮"
      left-arrow
      @click-left="$router.go(-1)"
    />
    <van-form @submit="onSubmit">
      <!-- 输入框表单 -->
      <van-field
        v-model="phone"
        required
        label="手机号"
        type="tel"
        placeholder="请输入手机号"
        name="mobile"
        :rules="[
          { required: true, message: '请填写手机号' },
          {
            pattern: /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/,
            message: '手机号格式不对'
          }
        ]"
      />
      <van-field
        v-model="password"
        required
        label="验证码"
        placeholder="请输入验证码"
        name="code"
        :rules="[
          { required: true, message: '验证码没有写哦!' },
          { pattern: /\d{6}/, message: '验证码格式不对' }
        ]"
      />
      <div style="margin: 16px;">
        <van-button 
        round 
        block 
        type="info" 
        native-type="submit"
        :disabled="isLoading"
        :loading="isLoading"
        loading-text="登录中..."
        >提交</van-button
        >
      </div>
    </van-form>
  </div>
</template>

<script>
//导入网络中间层
import {userLogin} from '@/api/user.js'
//导入token工具
import {saveToken} from '@/utils/token.js'

export default {
  data () {
    return {
      phone: '13888888888',
      password: '246810',
      isLoading: false,
    }
  },

  methods: {
    /*
      1. values 是一个对象
      2. key 是表单中输入元素的name属性
      3. 表单校验通过之后会触发的回调函数
    */
    onSubmit (values) {
      console.log('submit', values)
      this.isLoading = true
      //发送登录请求
      userLogin(values).then(res => {
        console.log(res)
        this.$toast.success('登录成功')
        //登录成功之后，保存token
        saveToken(res.data.data)
        //跳转首页
        this.$router.go(-1)
      })
      .catch(err=>{
        this.$toast.success('账号或验证码错误')
      })
      .then(()=>{//最后一个then，只要本次请求完成就会执行，不管是成功还是失败
        this.isLoading = false
      })
    }
  }
}
</script>

<style lang="less">
.my-nav-bar {
  &.van-nav-bar {
    background-color: #3196fa;
  }

  .van-nav-bar__title {
    color: #fff;
  }

  .van-nav-bar__left {
    .van-icon-arrow-left,
    .van-nav-bar__text {
      color: #fff;
    }
  }
}
</style>
